import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
Vue.use(VueRouter)

const routes = [
  
]

const router = new VueRouter({
  routes:[
    {
      path: '/',redirect: '/login'
    },
    {
      path: '/login',component: Login
    },
    {
      path: '/home',
      component: Home,
      redirect:'/welcome',
      children:[
        {path: '/welcome',component: Welcome},
        {path: '/users',component:Users},
        {path: '/rights',component:Rights},
        {path: '/roles',component:Roles},
        
      ]
    }
  ]
})

//挂载路由导航守卫
router.beforeEach((to,from,next) =>{
  //to 将要访问的路径
  //from 代表从哪个路径跳转而来
  //next 是一个函数，表示放行
  //    next() 放行， next('/login') 强制跳转

  if(to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr) return next('/login')
  next()
})

export default router
